There was a proposal in Switzerland (not sure what came off it) that essentially worked like this: * income from capital is taxed extremely highly at a progres

There was a proposal in Switzerland (not sure what came off it) that essentially worked like this: * income from capital is taxed extremely highly at a progressive rate * the allowance/exempt amount is high enough to cover most investment based retirement plans * the definition of "income from capital" was left open enough to at least cover most trading and rent-seeking but require explicit narrowing before the law could be passed The goal was pretty much explicitly to tax income from actual labor less and income from simply already having capital a lot more.